Gonad development and reproductive hormones of invasive silver carp (Hypophthalmichthys molitrix) in the Illinois River.

Gonad development and reproductive hormones of invasive silver carp (Hypophthalmichthys molitrix) in the Illinois River. Biol Reprod. 2019 Nov 11;: Authors: Tucker EK, Zurliene ME, Suski CD, Nowak RA Abstract Reproduction is a major component of an animal's life history strategy. Species with plasticity in their reproductive biology are likely to be successful as an invasive species, as they can adapt their reproductive effort during various phases of a biological invasion. Silver carp (Hypophthalmicthys molitrix), an invasive cyprinid in North America, display wide variation in reproductive strategies across both their native and introduced ranges, though the specifics of silver carp reproduction in the Illinois River have not been established. We assessed reproductive status using histological and endocrinological methods in silver carp between April-October 2018, with additional histological data from August-October 2017. Here we show that female silver carp are batch spawners with asynchronous, indeterminate oocyte recruitment, while male silver carp utilize a determinate pattern of spermatogenesis which ceases in the early summer. High plasma testosterone levels in females could be responsible for regulating oocyte development. Our results suggest that silver carp have high spawning activity in the early summer (May-June), but outside of the peak spawning period, female silver carp can maintain spawning-capable status by adjusting rates of gametogen...
Source: Biology of Reproduction - Category: Reproduction Medicine Authors: Tags: Biol Reprod Source Type: research

Related Links:

CONCLUSIONS: Patients with CHARGE syndrome have a high prevalence of characteristic cerebellar heterotopias and disorganized foliation and abnormal cerebellar morphology, thereby expanding the phenotype of cerebellar dysgenesis in this syndrome.
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: PEDIATRICS Source Type: research
Conclusions: Ovarian reserve of offspring diminished with RF exposure during pregnancy. Omega-3 supplementation during pregnancy may reduce the potential premature ovarian failure. PMID: 31820670 [PubMed - as supplied by publisher]
Source: Fetal and Pediatric Pathology - Category: Pathology Tags: Fetal Pediatr Pathol Source Type: research
Rachel Gregoire's daughter, Alice, has esophageal atresia, which means she regularly needs to see a pediatrician. But since Yorkton lost its only pediatrician in September, the Gregoire family now needs to drive to Regina every two weeks for appointments.
Source: CBC | Health - Category: Consumer Health News Tags: News/Canada/Saskatchewan Source Type: news
To assess long-term neurodevelopmental outcomes in school-aged children with biliary atresia.
Source: The Journal of Pediatrics - Category: Pediatrics Authors: Tags: Original Articles Source Type: research
CONCLUSIONS.: Prenatal diagnosis increases survival from severe congenital heart disease. However, cyanotic heart diseases and other congenital anomalies, which decrease this chance, should be considered, if surgery is performed or complications occur. PMID: 31800935 [PubMed - in process]
Source: Revista Peruana de Medicina de Experimental y Salud Publica - Category: International Medicine & Public Health Tags: Rev Peru Med Exp Salud Publica Source Type: research
Klin Padiatr DOI: 10.1055/a-1044-2571 © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Full text
Source: Klinische Padiatrie - Category: Pediatrics Authors: Tags: Short Communication Source Type: research
Condition:   Esophageal Atresia With Tracheoesophageal Fistula Intervention:   Diagnostic Test: high resolution impedance manometry Sponsors:   Great Ormond Street Hospital for Children NHS Foundation Trust;   National Institute for Health Research, United Kingdom Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Abstract Background: The improvement in surgical techniques has contributed to an increasing number of childbearing women with complex congenital heart disease (CCC). However, adequate counseling about pregnancy in this situation is uncertain, due to a wide variety of residual cardiac lesions. Objectives: To evaluate fetal and maternal outcomes in pregnant women with CCC and to analyze the predictive variables of prognosis. Methods: During 10 years we followed 435 consecutive pregnancies in patients (pts) with congenital heart disease. Among of them, we selected 42 pregnancies in 40 (mean age of 25.5 ± 4.5 years) pt...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
Abstract Background: The improvement in surgical techniques has contributed to an increasing number of childbearing women with complex congenital heart disease (CCC). However, adequate counseling about pregnancy in this situation is uncertain, due to a wide variety of residual cardiac lesions. Objectives: To evaluate fetal and maternal outcomes in pregnant women with CCC and to analyze the predictive variables of prognosis. Methods: During 10 years we followed 435 consecutive pregnancies in patients (pts) with congenital heart disease. Among of them, we selected 42 pregnancies in 40 (mean age of 25.5 ± 4.5 years) pt...
Source: Arquivos Brasileiros de Cardiologia - Category: Cardiology Source Type: research
Conclusions: VD deficiency was common and inversely correlated with liver fibrosis in BA patients. Furthermore, VD was not correlated with liver function except alkaline phosphatase. PMID: 31781188 [PubMed]
Source: Gastroenterology Research and Practice - Category: Gastroenterology Tags: Gastroenterol Res Pract Source Type: research
More News: Academia | Atresia | Biology | Endocrinology | Environmental Health | Hormones | Reproduction Medicine | Study | USA Health